Built-up Felt Roofing

Built-up felt roofing (BUFR) is a traditional method of waterproofing that incorporates multiple layers of bituminous roofing felt. A typical system will consist of a vapour control layer, underlay and cap sheet and these layers are combined (built-up) with thermal insulation to create a durable and reliable waterproofing solution.

BUFR systems can offer a cost-effective waterproofing solution for many everyday projects. They are typically specified on refurbishment schemes and are a popular choice for buildings in the education, healthcare and commercial sectors.

The technology behind BUFR membranes has evolved with the times and today’s products incorporate polymer modified bitumen offering low temperature flexibility and high temperature stability. Many membranes also incorporate tough polyester or glass-fibre reinforcement, providing added strength and durability.

BUFR stands for built-up felt roofing and is a traditional method of waterproofing flat roofs that has been successfully used for over 100 years.

There are number of ways of installing built-up felt roofing membranes. Today, most membranes are either torch-applied or, for flame-free projects they are available with a self-adhesive backing.